Black Box ISU2011-4-EURO Manual De Usuario

 

 
Fault 

Pwr-LED is off 

BRI-Hub is powered off  Plug in power adaptor 

 

No mains power 

Check for main power  

 

Faulty power adaptor 

Use other compatible power adaptor. Check 
polarity! 

 

For BRI-HUB-S only: 
loss of power inside NT 
or PABX 

Use original power adapter 

 

BRI-Hub is faulty 
 

Please return the device to your dealer. 

Specific devices 
on a port do not 
operate via the 
BRI 

Cable shorts 

Use another port for test. 
 
Check for cabling faults. 

 Faulty 

terminal 

equipment 

Check with other equipment 

 

Cable too long 

Connect TE directly to the BRI-Hub for test 

Only devices at 
port 1 may 
communicate 

A BRI-HUB is used 
which is in the power 
down mode 

Power on the BRI-HUB  

 
 
If you are still having problems with you BRI-Hub, please call Black Box technical Support.